I recently returned from cycling in Dublin (and Connemara, briefly), happy to see a new bike sharing scheme in use. Even with the winter temperatures, there was palpable enthusiasm for the service. I'm a big fan of the Washington DC version, even though I tend to be self-reliant.
So now Montgomery County, Maryland is seeking funds to bring Capital Bikeshare to the area... awesome! Let's hope that traffic cooperates, since suburban drivers tend to move more quickly, with less bandwidth for attention to the road.
If you dress right, the winter can be a good time to free yourself of the chains of the automobile -- get in shape while saving money and time getting where you need to go. Just be visible, to avoid getting smooshed.